/* The meaning of the Scsi_Pointer members in this driver is as follows:
* ptr: Chaining
- * this_residual: Command priority
- * buffer: unused
- * dma_handle: will drop in !use_sg patch.
- * buffers_residual: Timeout value
- * Status: Command status (gdth_do_cmd()), DMA mem. mappings
- * Message: Additional info (gdth_do_cmd()), DMA direction
- * have_data_in: Flag for gdth_wait_completion()
- * sent_command: Opcode special command
- * phase: Service/parameter/return code special command
+ * this_residual: gdth_bufflen
+ * buffer: gdth_sglist
+ * dma_handle: unused
+ * buffers_residual: gdth_sg_count
+ * Status: unused
+ * Message: unused
+ * have_data_in: unused
+ * sent_command: unused
+ * phase: unused
*/
#include <asm/uaccess.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
+#include <linux/scatterlist.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
static void gdth_clear_events(void);
static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
- char *buffer,ushort count);
+ char *buffer, ushort count, int to_buffer);
static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive);
#ifdef CONFIG_ISA
static unchar gdth_drq_tab[4] = {5,6,7,7}; /* DRQ table */
#endif
-#ifdef CONFIG_EISA
+#if defined(CONFIG_EISA) || defined(CONFIG_ISA)
static unchar gdth_irq_tab[6] = {0,10,11,12,14,0}; /* IRQ table */
#endif
static unchar gdth_polling; /* polling if TRUE */
.release = gdth_close,
};
+/*
+ * gdth scsi_command access wrappers.
+ * below 6 functions are used throughout the driver to access scsi_command's
+ * io parameters. The reason we do not use the regular accessors from
+ * scsi_cmnd.h is because of gdth_execute(). Since it is unrecommended for
+ * llds to directly set scsi_cmnd's IO members. This driver will use SCp
+ * members for IO parameters, and will copy scsi_cmnd's members to Scp
+ * members in queuecommand. For internal commands through gdth_execute()
+ * SCp's members will be set directly.
+ */
+static inline unsigned gdth_bufflen(struct scsi_cmnd *cmd)
+{
+ return (unsigned)cmd->SCp.this_residual;
+}
+
+static inline void gdth_set_bufflen(struct scsi_cmnd *cmd, unsigned bufflen)
+{
+ cmd->SCp.this_residual = bufflen;
+}
+
+static inline unsigned gdth_sg_count(struct scsi_cmnd *cmd)
+{
+ return (unsigned)cmd->SCp.buffers_residual;
+}
+
+static inline void gdth_set_sg_count(struct scsi_cmnd *cmd, unsigned sg_count)
+{
+ cmd->SCp.buffers_residual = sg_count;
+}
+
+static inline struct scatterlist *gdth_sglist(struct scsi_cmnd *cmd)
+{
+ return cmd->SCp.buffer;
+}
+
+static inline void gdth_set_sglist(struct scsi_cmnd *cmd,
+ struct scatterlist *sglist)
+{
+ cmd->SCp.buffer = sglist;
+}
+
#include "gdth_proc.h"
#include "gdth_proc.c"
gdth_ha_str *ha = shost_priv(sdev->host);
Scsi_Cmnd *scp;
struct gdth_cmndinfo cmndinfo;
+ struct scatterlist one_sg;
DECLARE_COMPLETION_ONSTACK(wait);
int rval;
/* use request field to save the ptr. to completion struct. */
scp->request = (struct request *)&wait;
scp->timeout_per_command = timeout*HZ;
- scp->request_buffer = gdtcmd;
+ sg_init_one(&one_sg, gdtcmd, sizeof(*gdtcmd));
+ gdth_set_sglist(scp, &one_sg);
+ gdth_set_sg_count(scp, 1);
+ gdth_set_bufflen(scp, sizeof(*gdtcmd));
scp->cmd_len = 12;
memcpy(scp->cmnd, cmnd, 12);
- scp->SCp.this_residual = IOCTL_PRI; /* priority */
+ cmndinfo.priority = IOCTL_PRI;
cmndinfo.internal_command = 1;
TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
wait_for_completion(&wait);
- rval = scp->SCp.Status;
+ rval = cmndinfo.status;
if (info)
- *info = scp->SCp.Message;
+ *info = cmndinfo.info;
kfree(scp);
return rval;
}
spin_lock_irqsave(&ha->smp_lock, flags);
if (!cmndinfo->internal_command) {
- scp->SCp.this_residual = (int)priority;
+ cmndinfo->priority = priority;
b = scp->device->channel;
t = scp->device->id;
if (priority >= DEFAULT_PRI) {
if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
(b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
- scp->SCp.buffers_residual = gdth_update_timeout(scp, 0);
+ cmndinfo->timeout = gdth_update_timeout(scp, 0);
}
}
}
pscp = ha->req_first;
nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
/* priority: 0-highest,..,0xff-lowest */
- while (nscp && (unchar)nscp->SCp.this_residual <= priority) {
+ while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
pscp = nscp;
nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
}
cmd_index = 0;
for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
+ struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
- if (!gdth_cmnd_priv(nscp)->internal_command) {
+ if (!nscp_cmndinfo->internal_command) {
b = nscp->device->channel;
t = nscp->device->id;
l = nscp->device->lun;
- if (nscp->SCp.this_residual >= DEFAULT_PRI) {
+ if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
(b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
continue;
firsttime = FALSE;
}
- if (!gdth_cmnd_priv(nscp)->internal_command) {
- if (nscp->SCp.phase == -1) {
- nscp->SCp.phase = CACHESERVICE; /* default: cache svc. */
+ if (!nscp_cmndinfo->internal_command) {
+ if (nscp_cmndinfo->phase == -1) {
+ nscp_cmndinfo->phase = CACHESERVICE; /* default: cache svc. */
if (nscp->cmnd[0] == TEST_UNIT_READY) {
TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n",
b, t, l));
} else if ((ha->scan_mode & 0x0f) == 1) {
if (b == 0 && ((t == 0 && l == 1) ||
(t == 1 && l == 0))) {
- nscp->SCp.sent_command = GDT_SCAN_START;
- nscp->SCp.phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
+ nscp_cmndinfo->OpCode = GDT_SCAN_START;
+ nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
| SCSIRAWSERVICE;
ha->scan_mode = 0x12;
TRACE2(("Scan mode: 0x%x (SCAN_START)\n",
}
} else if (ha->scan_mode == 0x12) {
if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
- nscp->SCp.phase = SCSIRAWSERVICE;
- nscp->SCp.sent_command = GDT_SCAN_END;
+ nscp_cmndinfo->phase = SCSIRAWSERVICE;
+ nscp_cmndinfo->OpCode = GDT_SCAN_END;
ha->scan_mode &= 0x10;
TRACE2(("Scan mode: 0x%x (SCAN_END)\n",
ha->scan_mode));
nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
(ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
/* always GDT_CLUST_INFO! */
- nscp->SCp.sent_command = GDT_CLUST_INFO;
+ nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
}
}
}
- if (nscp->SCp.sent_command != -1) {
- if ((nscp->SCp.phase & 0xff) == CACHESERVICE) {
+ if (nscp_cmndinfo->OpCode != -1) {
+ if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
this_cmd = FALSE;
next_cmd = FALSE;
- } else if ((nscp->SCp.phase & 0xff) == SCSIRAWSERVICE) {
+ } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
this_cmd = FALSE;
next_cmd = FALSE;
nscp->sense_buffer[0] = 0x70;
nscp->sense_buffer[2] = NOT_READY;
nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
}
TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
nscp->cmnd[0], b, t, l));
nscp->result = DID_BAD_TARGET << 16;
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
} else {
nscp->sense_buffer[0] = 0x70;
nscp->sense_buffer[2] = UNIT_ATTENTION;
nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
} else if (gdth_internal_cache_cmd(ha, nscp))
TRACE(("Prevent r. nonremov. drive->do nothing\n"));
nscp->result = DID_OK << 16;
nscp->sense_buffer[0] = 0;
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
} else {
nscp->sense_buffer[0] = 0x70;
nscp->sense_buffer[2] = UNIT_ATTENTION;
nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
} else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
ha->hanum, nscp->cmnd[0]);
nscp->result = DID_ABORT << 16;
- if (!nscp->SCp.have_data_in)
- nscp->SCp.have_data_in++;
+ if (!nscp_cmndinfo->wait_for_completion)
+ nscp_cmndinfo->wait_for_completion++;
else
gdth_scsi_done(nscp);
break;
ha->hanum, cmd_index);
}
}
-
+
+/*
+ * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
+ * buffers, kmap_atomic() as needed.
+ */
static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
- char *buffer,ushort count)
+ char *buffer, ushort count, int to_buffer)
{
- ushort cpcount,i;
+ ushort cpcount,i, max_sg = gdth_sg_count(scp);
ushort cpsum,cpnow;
struct scatterlist *sl;
char *address;
- cpcount = count<=(ushort)scp->request_bufflen ? count:(ushort)scp->request_bufflen;
+ cpcount = min_t(ushort, count, gdth_bufflen(scp));
- if (scp->use_sg) {
- sl = (struct scatterlist *)scp->request_buffer;
- for (i=0,cpsum=0; i<scp->use_sg; ++i,++sl) {
+ if (cpcount) {
+ cpsum=0;
+ scsi_for_each_sg(scp, sl, max_sg, i) {
unsigned long flags;
cpnow = (ushort)sl->length;
TRACE(("copy_internal() now %d sum %d count %d %d\n",
- cpnow,cpsum,cpcount,(ushort)scp->bufflen));
+ cpnow, cpsum, cpcount, gdth_bufflen(scp)));
if (cpsum+cpnow > cpcount)
cpnow = cpcount - cpsum;
cpsum += cpnow;
- if (!sl->page) {
+ if (!sg_page(sl)) {
printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
ha->hanum);
return;
}
local_irq_save(flags);
- address = kmap_atomic(sl->page, KM_BIO_SRC_IRQ) + sl->offset;
- memcpy(address,buffer,cpnow);
- flush_dcache_page(sl->page);
+ address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
+ if (to_buffer)
+ memcpy(buffer, address, cpnow);
+ else
+ memcpy(address, buffer, cpnow);
+ flush_dcache_page(sg_page(sl));
kunmap_atomic(address, KM_BIO_SRC_IRQ);
local_irq_restore(flags);
if (cpsum == cpcount)
break;
buffer += cpnow;
}
- } else {
- TRACE(("copy_internal() count %d\n",cpcount));
- memcpy((char*)scp->request_buffer,buffer,cpcount);
+ } else if (count) {
+ printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
+ ha->hanum);
+ WARN_ON(1);
}
}
gdth_rdcap_data rdc;
gdth_sense_data sd;
gdth_modep_data mpd;
+ struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
t = scp->device->id;
TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
strcpy(inq.vendor,ha->oem_name);
sprintf(inq.product,"Host Drive #%02d",t);
strcpy(inq.revision," ");
- gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
+ gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data), 0);
break;
case REQUEST_SENSE:
sd.key = NO_SENSE;
sd.info = 0;
sd.add_length= 0;
- gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
+ gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data), 0);
break;
case MODE_SENSE:
mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
- gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
+ gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data), 0);
break;
case READ_CAPACITY:
else
rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
rdc.block_length = cpu_to_be32(SECTOR_SIZE);
- gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
+ gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data), 0);
break;
case SERVICE_ACTION_IN:
rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
rdc16.block_length = cpu_to_be32(SECTOR_SIZE);
gdth_copy_internal_data(ha, scp, (char*)&rdc16,
- sizeof(gdth_rdcap16_data));
+ sizeof(gdth_rdcap16_data), 0);
} else {
scp->result = DID_ABORT << 16;
}
break;
}
- if (!scp->SCp.have_data_in)
- scp->SCp.have_data_in++;
+ if (!cmndinfo->wait_for_completion)
+ cmndinfo->wait_for_completion++;
else
return 1;
static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
{
register gdth_cmd_str *cmdp;
- struct scatterlist *sl;
+ struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
ulong32 cnt, blockcnt;
ulong64 no, blockno;
- dma_addr_t phys_addr;
int i, cmd_index, read_write, sgcnt, mode64;
- struct page *page;
- ulong offset;
cmdp = ha->pccb;
TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
/* fill command */
read_write = 0;
- if (scp->SCp.sent_command != -1)
- cmdp->OpCode = scp->SCp.sent_command; /* special cache cmd. */
+ if (cmndinfo->OpCode != -1)
+ cmdp->OpCode = cmndinfo->OpCode; /* special cache cmd. */
else if (scp->cmnd[0] == RESERVE)
cmdp->OpCode = GDT_RESERVE_DRV;
else if (scp->cmnd[0] == RELEASE)
cmdp->u.cache.BlockCnt = blockcnt;
}
- if (scp->use_sg) {
- sl = (struct scatterlist *)scp->request_buffer;
- sgcnt = scp->use_sg;
- scp->SCp.Status = GDTH_MAP_SG;
- scp->SCp.Message = (read_write == 1 ?
+ if (gdth_bufflen(scp)) {
+ cmndinfo->dma_dir = (read_write == 1 ?
PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
- sgcnt = pci_map_sg(ha->pdev,sl,scp->use_sg,scp->SCp.Message);
+ sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ cmndinfo->dma_dir);
if (mode64) {
+ struct scatterlist *sl;
+
cmdp->u.cache64.DestAddr= (ulong64)-1;
cmdp->u.cache64.sg_canz = sgcnt;
- for (i=0; i<sgcnt; ++i,++sl) {
+ scsi_for_each_sg(scp, sl, sgcnt, i) {
cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
}
} else {
+ struct scatterlist *sl;
+
cmdp->u.cache.DestAddr= 0xffffffff;
cmdp->u.cache.sg_canz = sgcnt;
- for (i=0; i<sgcnt; ++i,++sl) {
+ scsi_for_each_sg(scp, sl, sgcnt, i) {
cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
ha->dma32_cnt++;
}
#endif
- } else if (scp->request_bufflen) {
- scp->SCp.Status = GDTH_MAP_SINGLE;
- scp->SCp.Message = (read_write == 1 ?
- PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
- page = virt_to_page(scp->request_buffer);
- offset = (ulong)scp->request_buffer & ~PAGE_MASK;
- phys_addr = pci_map_page(ha->pdev,page,offset,
- scp->request_bufflen,scp->SCp.Message);
- scp->SCp.dma_handle = phys_addr;
- if (mode64) {
- if (ha->cache_feat & SCATTER_GATHER) {
- cmdp->u.cache64.DestAddr = (ulong64)-1;
- cmdp->u.cache64.sg_canz = 1;
- cmdp->u.cache64.sg_lst[0].sg_ptr = phys_addr;
- cmdp->u.cache64.sg_lst[0].sg_len = scp->request_bufflen;
- cmdp->u.cache64.sg_lst[1].sg_len = 0;
- } else {
- cmdp->u.cache64.DestAddr = phys_addr;
- cmdp->u.cache64.sg_canz= 0;
- }
- } else {
- if (ha->cache_feat & SCATTER_GATHER) {
- cmdp->u.cache.DestAddr = 0xffffffff;
- cmdp->u.cache.sg_canz = 1;
- cmdp->u.cache.sg_lst[0].sg_ptr = phys_addr;
- cmdp->u.cache.sg_lst[0].sg_len = scp->request_bufflen;
- cmdp->u.cache.sg_lst[1].sg_len = 0;
- } else {
- cmdp->u.cache.DestAddr = phys_addr;
- cmdp->u.cache.sg_canz= 0;
- }
- }
}
}
/* evaluate command size, check space */
static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b)
{
register gdth_cmd_str *cmdp;
- struct scatterlist *sl;
ushort i;
- dma_addr_t phys_addr, sense_paddr;
+ dma_addr_t sense_paddr;
int cmd_index, sgcnt, mode64;
unchar t,l;
struct page *page;
cmndinfo = gdth_cmnd_priv(scp);
/* fill command */
- if (scp->SCp.sent_command != -1) {
- cmdp->OpCode = scp->SCp.sent_command; /* special raw cmd. */
+ if (cmndinfo->OpCode != -1) {
+ cmdp->OpCode = cmndinfo->OpCode; /* special raw cmd. */
cmdp->BoardNode = LOCALBOARD;
if (mode64) {
- cmdp->u.raw64.direction = (scp->SCp.phase >> 8);
+ cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
TRACE2(("special raw cmd 0x%x param 0x%x\n",
cmdp->OpCode, cmdp->u.raw64.direction));
/* evaluate command size */
ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
} else {
- cmdp->u.raw.direction = (scp->SCp.phase >> 8);
+ cmdp->u.raw.direction = (cmndinfo->phase >> 8);
TRACE2(("special raw cmd 0x%x param 0x%x\n",
cmdp->OpCode, cmdp->u.raw.direction));
/* evaluate command size */
cmdp->u.raw64.lun = l;
cmdp->u.raw64.bus = b;
cmdp->u.raw64.priority = 0;
- cmdp->u.raw64.sdlen = scp->request_bufflen;
+ cmdp->u.raw64.sdlen = gdth_bufflen(scp);
cmdp->u.raw64.sense_len = 16;
cmdp->u.raw64.sense_data = sense_paddr;
cmdp->u.raw64.direction =
cmdp->u.raw.bus = b;
cmdp->u.raw.priority = 0;
cmdp->u.raw.link_p = 0;
- cmdp->u.raw.sdlen = scp->request_bufflen;
+ cmdp->u.raw.sdlen = gdth_bufflen(scp);
cmdp->u.raw.sense_len = 16;
cmdp->u.raw.sense_data = sense_paddr;
cmdp->u.raw.direction =
cmdp->u.raw.sg_ranz = 0;
}
- if (scp->use_sg) {
- sl = (struct scatterlist *)scp->request_buffer;
- sgcnt = scp->use_sg;
- scp->SCp.Status = GDTH_MAP_SG;
- scp->SCp.Message = PCI_DMA_BIDIRECTIONAL;
- sgcnt = pci_map_sg(ha->pdev,sl,scp->use_sg,scp->SCp.Message);
+ if (gdth_bufflen(scp)) {
+ cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
+ sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ cmndinfo->dma_dir);
if (mode64) {
+ struct scatterlist *sl;
+
cmdp->u.raw64.sdata = (ulong64)-1;
cmdp->u.raw64.sg_ranz = sgcnt;
- for (i=0; i<sgcnt; ++i,++sl) {
+ scsi_for_each_sg(scp, sl, sgcnt, i) {
cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
}
} else {
+ struct scatterlist *sl;
+
cmdp->u.raw.sdata = 0xffffffff;
cmdp->u.raw.sg_ranz = sgcnt;
- for (i=0; i<sgcnt; ++i,++sl) {
+ scsi_for_each_sg(scp, sl, sgcnt, i) {
cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
ha->dma32_cnt++;
}
#endif
- } else if (scp->request_bufflen) {
- scp->SCp.Status = GDTH_MAP_SINGLE;
- scp->SCp.Message = PCI_DMA_BIDIRECTIONAL;
- page = virt_to_page(scp->request_buffer);
- offset = (ulong)scp->request_buffer & ~PAGE_MASK;
- phys_addr = pci_map_page(ha->pdev,page,offset,
- scp->request_bufflen,scp->SCp.Message);
- scp->SCp.dma_handle = phys_addr;
-
- if (mode64) {
- if (ha->raw_feat & SCATTER_GATHER) {
- cmdp->u.raw64.sdata = (ulong64)-1;
- cmdp->u.raw64.sg_ranz= 1;
- cmdp->u.raw64.sg_lst[0].sg_ptr = phys_addr;
- cmdp->u.raw64.sg_lst[0].sg_len = scp->request_bufflen;
- cmdp->u.raw64.sg_lst[1].sg_len = 0;
- } else {
- cmdp->u.raw64.sdata = phys_addr;
- cmdp->u.raw64.sg_ranz= 0;
- }
- } else {
- if (ha->raw_feat & SCATTER_GATHER) {
- cmdp->u.raw.sdata = 0xffffffff;
- cmdp->u.raw.sg_ranz= 1;
- cmdp->u.raw.sg_lst[0].sg_ptr = phys_addr;
- cmdp->u.raw.sg_lst[0].sg_len = scp->request_bufflen;
- cmdp->u.raw.sg_lst[1].sg_len = 0;
- } else {
- cmdp->u.raw.sdata = phys_addr;
- cmdp->u.raw.sg_ranz= 0;
- }
- }
}
if (mode64) {
TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
if (ha->type==GDT_EISA && ha->cmd_cnt>0)
return 0;
- memcpy( cmdp, scp->request_buffer, sizeof(gdth_cmd_str));
+ gdth_copy_internal_data(ha, scp, (char *)cmdp, sizeof(gdth_cmd_str), 1);
cmdp->RequestBuffer = scp;
/* search free command index */
if (!gdth_polling)
spin_unlock_irqrestore(&ha->smp_lock, flags);
if (rval == 2) {
- gdth_putq(ha, scp,scp->SCp.this_residual);
+ gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
} else if (rval == 1) {
gdth_scsi_done(scp);
}
} else {
b = scp->device->channel;
t = scp->device->id;
- if (scp->SCp.sent_command == -1 && b != ha->virt_bus) {
+ if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
}
/* cache or raw service */
if (ha->status == S_BSY) {
TRACE2(("Controller busy -> retry !\n"));
- if (scp->SCp.sent_command == GDT_MOUNT)
- scp->SCp.sent_command = GDT_CLUST_INFO;
+ if (cmndinfo->OpCode == GDT_MOUNT)
+ cmndinfo->OpCode = GDT_CLUST_INFO;
/* retry */
return 2;
}
- if (scp->SCp.Status == GDTH_MAP_SG)
- pci_unmap_sg(ha->pdev,scp->request_buffer,
- scp->use_sg,scp->SCp.Message);
- else if (scp->SCp.Status == GDTH_MAP_SINGLE)
- pci_unmap_page(ha->pdev,scp->SCp.dma_handle,
- scp->request_bufflen,scp->SCp.Message);
+ if (gdth_bufflen(scp))
+ pci_unmap_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
+ cmndinfo->dma_dir);
+
if (cmndinfo->sense_paddr)
pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
PCI_DMA_FROMDEVICE);
if (ha->status == S_OK) {
- scp->SCp.Status = S_OK;
- scp->SCp.Message = ha->info;
- if (scp->SCp.sent_command != -1) {
+ cmndinfo->status = S_OK;
+ cmndinfo->info = ha->info;
+ if (cmndinfo->OpCode != -1) {
TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
- scp->SCp.sent_command));
+ cmndinfo->OpCode));
/* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
- if (scp->SCp.sent_command == GDT_CLUST_INFO) {
+ if (cmndinfo->OpCode == GDT_CLUST_INFO) {
ha->hdr[t].cluster_type = (unchar)ha->info;
if (!(ha->hdr[t].cluster_type &
CLUSTER_MOUNTED)) {
/* NOT MOUNTED -> MOUNT */
- scp->SCp.sent_command = GDT_MOUNT;
+ cmndinfo->OpCode = GDT_MOUNT;
if (ha->hdr[t].cluster_type &
CLUSTER_RESERVED) {
/* cluster drive RESERVED (on the other node) */
- scp->SCp.phase = -2; /* reservation conflict */
+ cmndinfo->phase = -2; /* reservation conflict */
}
} else {
- scp->SCp.sent_command = -1;
+ cmndinfo->OpCode = -1;
}
} else {
- if (scp->SCp.sent_command == GDT_MOUNT) {
+ if (cmndinfo->OpCode == GDT_MOUNT) {
ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
ha->hdr[t].media_changed = TRUE;
- } else if (scp->SCp.sent_command == GDT_UNMOUNT) {
+ } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
ha->hdr[t].media_changed = TRUE;
}
- scp->SCp.sent_command = -1;
+ cmndinfo->OpCode = -1;
}
/* retry */
- scp->SCp.this_residual = HIGH_PRI;
+ cmndinfo->priority = HIGH_PRI;
return 2;
} else {
/* RESERVE/RELEASE ? */
scp->sense_buffer[0] = 0;
}
} else {
- scp->SCp.Status = ha->status;
- scp->SCp.Message = ha->info;
+ cmndinfo->status = ha->status;
+ cmndinfo->info = ha->info;
- if (scp->SCp.sent_command != -1) {
+ if (cmndinfo->OpCode != -1) {
TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
- scp->SCp.sent_command, ha->status));
- if (scp->SCp.sent_command == GDT_SCAN_START ||
- scp->SCp.sent_command == GDT_SCAN_END) {
- scp->SCp.sent_command = -1;
+ cmndinfo->OpCode, ha->status));
+ if (cmndinfo->OpCode == GDT_SCAN_START ||
+ cmndinfo->OpCode == GDT_SCAN_END) {
+ cmndinfo->OpCode = -1;
/* retry */
- scp->SCp.this_residual = HIGH_PRI;
+ cmndinfo->priority = HIGH_PRI;
return 2;
}
memset((char*)scp->sense_buffer,0,16);
}
}
}
- if (!scp->SCp.have_data_in)
- scp->SCp.have_data_in++;
+ if (!cmndinfo->wait_for_completion)
+ cmndinfo->wait_for_completion++;
else
return 1;
}
scp->scsi_done = done;
gdth_update_timeout(scp, scp->timeout_per_command * 6);
- scp->SCp.this_residual = DEFAULT_PRI;
+ cmndinfo->priority = DEFAULT_PRI;
+
+ gdth_set_bufflen(scp, scsi_bufflen(scp));
+ gdth_set_sg_count(scp, scsi_sg_count(scp));
+ gdth_set_sglist(scp, scsi_sglist(scp));
+
return __gdth_queuecommand(ha, scp, cmndinfo);
}
struct gdth_cmndinfo *cmndinfo)
{
scp->host_scribble = (unsigned char *)cmndinfo;
- scp->SCp.have_data_in = 1;
- scp->SCp.phase = -1;
- scp->SCp.sent_command = -1;
- scp->SCp.Status = GDTH_MAP_NONE;
+ cmndinfo->wait_for_completion = 1;
+ cmndinfo->phase = -1;
+ cmndinfo->OpCode = -1;
#ifdef GDTH_STATISTICS
++act_ios;
#endif
- gdth_putq(ha, scp, scp->SCp.this_residual);
+ gdth_putq(ha, scp, cmndinfo->priority);
gdth_next(ha);
return 0;
}
return -ENOMEM;
scp->device = ha->sdev;
scp->cmd_len = 12;
- scp->use_sg = 0;
scp->device->channel = res.number;
rval = gdth_eh_bus_reset(scp);
res.status = (rval == SUCCESS ? S_OK : S_GENERR);
#endif /* CONFIG_PCI */
TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
+
+ if (list_empty(&gdth_instances))
+ return -ENODEV;
+
#ifdef GDTH_STATISTICS
TRACE2(("gdth_detect(): Initializing timer !\n"));
init_timer(&gdth_timer);
projects / linux-2.6 / blobdiff